Rotor supporting device for nuclear power plant

Abstract

The utility model discloses a nuclear power plant rotor supporting device which comprises a supporting frame, a height adjusting assembly, a bearing plate and a supporting assembly. The supporting frame comprises a base, a top plate and a supporting connecting plate. Each height adjusting assembly comprises a first supporting body, a second supporting body and two adjusting plates; the two supporting assemblies are oppositely arranged on the bearing plate so as to bear the nuclear power plant rotor, and each supporting assembly comprises a first installation base, a second installation base, a rolling shaft and a rolling wheel. According to the nuclear power plant rotor supporting device, compared with a sleeper stacking scheme, the industrial safety risk can be effectively reduced, in addition, the supporting assembly can reliably support rotors with different shaft diameters, the supporting assembly adopts the two rolling wheels as the supporting face, a concave arc face is formed between the two rolling wheels, and the supporting effect is good. Rotors with different shaft diameters are placed on the two rollers and can be in reliable contact with the two rollers, so that the rotors can be overturned, and the rotors can be effectively prevented from rolling and falling due to the concave cambered surface structure.

Description

Technical Field

[0001] The utility model relates to the technical field of nuclear power, in particular to a rotor supporting device for a nuclear power plant. Background Art

[0002] The full inspection process of rotating equipment such as pumps and motors involves the extraction of rotors. There are no special tools for storing rotor spare parts after disassembly. Sleepers are now used to support the rotors. After stacking the sleepers vertically in 3-4 layers to the appropriate height, the rotors are placed on the sleepers, and simple pads are placed on both sides of the shaft to prevent the rotors from rotating.

[0003] However, this method has the following shortcomings: (1) Low safety and reliability: Since the sleepers are not relatively fixed to each other, the rotor is prone to tipping over when placed on the sleepers. Practical experience shows that when the number of sleepers stacked exceeds 3 layers, the risk of tipping over increases exponentially, which may cause injuries to maintenance personnel. If the rotor falls and collides with the ground, it will cause damage to the rotor. (2) Inconvenient maintenance operation: During the maintenance process, the rotor parts need to be rotated frequently to prevent the rotor from bending and deformation and to perform rotor inspection work. Due to the heavy weight of the rotor, the sleeper storage method is difficult to rotate and the rotation greatly increases the difficulty of tipping over. The rotor is inconvenient to flip during storage. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a nuclear power plant rotor supporting device.

[0005] The technical solution adopted by the utility model to solve the technical problem is as follows: constructing a nuclear power plant rotor support device, including a support frame, two height adjustment components, a bearing plate and two support components; the support frame includes a base, a top plate and a plurality of support connecting plates, the top plate and the base are arranged opposite to each other with a distance, and the plurality of support connecting plates connect the base and the top plate;

[0006] The two height adjustment assemblies are arranged opposite to each other, and each of the height adjustment assemblies includes a first support body, a second support body, and two adjustment plates; the first support body is provided with a plurality of first connection holes, and the plurality of first connection holes are spaced apart along the height direction; the second support body is provided with a plurality of second connection holes, and the plurality of second connection holes are spaced apart along the height direction; each of the adjustment plates is provided with a plurality of fixing holes, and the plurality of fixing holes are spaced apart along the height direction;

[0007] The first supporting bodies are connected to the top plate, the second supporting bodies are connected to the carrying plate, and the second supporting bodies are arranged above the first supporting bodies; the two adjusting plates are relatively mounted on opposite sides of the first supporting bodies and the second supporting bodies, and the fixing holes are correspondingly connected to the first connecting holes and the second connecting holes via fasteners;

[0008] The two support assemblies are arranged oppositely on the bearing plate to support the nuclear power plant rotor. Each support assembly includes a first mounting seat, a second mounting seat, a roller, and a roller. The first mounting seat and the second mounting seat are arranged opposite to each other, and the line connecting the first mounting seat and the second mounting seat is perpendicular to the length direction of the bearing plate.

[0009] The roller passes through the first mounting seat and the second mounting seat, and the roller is installed on a portion of the roller located between the first mounting seat and the second mounting seat.

[0010] In some embodiments, a plurality of the supporting connecting plates are connected to the base and the top plate at an angle, and two adjacent supporting connecting plates, the base and the top plate form a triangular structure.

[0011] In some embodiments, the base is H-shaped and includes a first bottom plate, a second bottom plate and a third bottom plate. The first bottom plate and the second bottom plate are arranged in parallel and spaced apart, and the two ends of the third bottom plate are respectively vertically connected to the first bottom plate and the second bottom plate.

[0012] In some embodiments, a length direction of the third bottom plate is the same as a length direction of the top plate, and a length of the third bottom plate is greater than a length of the top plate.

[0013] In some embodiments, the fastener comprises a fastening bolt or a fastening screw.

[0014] In some embodiments, each of the support components includes an end cover, the roller includes a limiting portion and an axis portion connected to the limiting portion, the axis portion is passed through the first mounting seat and the second mounting seat, the limiting portion is located on the outside of the first mounting seat, and the portion of the axis portion protruding from the second mounting seat is connected to the end cover.

[0015] In some embodiments, a first mounting hole is provided on the first mounting seat, and a second mounting hole is provided on the second mounting seat; the shaft portion passes through the first mounting hole and the second mounting hole.

[0016] In some embodiments, the first mounting seat is further provided with a first mounting groove, the first mounting groove is communicated with the first mounting hole, and the first mounting groove is provided with a first bearing;

[0017] The second mounting seat is further provided with a second mounting groove, the second mounting groove is communicated with the second mounting hole, and the second mounting groove is provided with a second bearing;

[0018] The shaft portion passes through the first bearing and the second bearing.

[0019] In some embodiments, the inner diameter of the first mounting groove is 0.002-0.008 mm larger than the outer diameter of the first bearing; the inner diameter of the second mounting groove is 0.002-0.008 mm larger than the outer diameter of the second bearing.

[0020] In some embodiments, the roller is a brass roller or a copper roller.

[0021] The implementation of the utility model has the following beneficial effects: the application of the nuclear power plant rotor support device can effectively reduce industrial safety risks compared with the sleeper stacking scheme. In addition, the support assembly can reliably support rotors with different shaft diameters. The support assembly uses two rollers as the support surface, and a concave arc surface is formed between the two rollers. Rotors with different shaft diameters placed on the two rollers can reliably contact the two rollers, and the rotor can be flipped, and the concave arc surface structure can effectively prevent the rotor from rolling and falling. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solution of the present invention, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and should not be considered as limiting the scope. A person of ordinary skill in the art can derive other relevant drawings based on these drawings without inventive effort. In the drawings:

[0023] Figure 1 It is a schematic structural diagram of a nuclear power plant rotor support device in some embodiments of the present invention;

[0024] Figure 2 It is a schematic structural diagram of a nuclear power plant rotor support device in some embodiments of the present invention;

[0025] Figure 3 is a schematic diagram of an application of a nuclear power plant rotor support device in some embodiments of the present invention;

[0026] Figure 4 It is a partial structural schematic diagram of a nuclear power plant rotor support device in some embodiments of the present utility model;

[0027] Figure 5 is one of the exploded views of the support assembly in some embodiments of the present invention;

[0028] Figure 6 This is the second exploded view of the support assembly in some embodiments of the present invention. DETAILED DESCRIPTION

[0029] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific embodiments of the present invention are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "back", "up", "down", "left", "right", "longitudinal", "horizontal", "vertical", "horizontal", "top", "bottom", "inside", "outside", "head", "tail", etc. are based on the directions or positional relationships shown in the accompanying drawings and are constructed and operated in specific directions. They are only for the convenience of describing the present technical solution and do not indicate that the devices or components referred to must have specific directions. Therefore, they should not be understood as limiting the present invention.

[0030] It should also be noted that, unless otherwise clearly specified and limited, terms such as "installed", "connected", "connected", "fixed", and "set" should be understood in a broad sense. For example, they can be fixedly connected, detachably connected, or integrated; they can be mechanically connected or electrically connected; they can be directly connected or indirectly connected through an intermediate medium, and they can be internal connections between two elements or interactions between two elements. When an element is referred to as being "on" or "under" another element, the element can be "directly" or "indirectly" located on the other element, or there may be one or more intervening elements. The terms "first", "second", and "third" are only used to facilitate the description of the present technical solution and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", and "third" can explicitly or implicitly include one or more of these features. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0031] In the following description, specific details such as specific system structures and techniques are provided for purposes of illustration, not limitation, to facilitate a thorough understanding of the embodiments of the present invention. However, it will be apparent to those skilled in the art that the present invention may be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to avoid obscuring the description of the present invention with unnecessary detail.

[0032] See Figures 1 to 3 The present invention shows a nuclear power plant rotor support device, which includes a support frame 10, two height adjustment components 20, a bearing plate 30 and two support components 40.

[0033] The support frame 10 includes a base 11, a top plate 12, and a plurality of support connecting plates 13. The top plate 12 is spaced apart from the base 11 and arranged opposite to each other. The support connecting plates 13 connect the base 11 and the top plate 12. The support connecting plates 13 are connected at an angle to the base 11 and the top plate 12. Two adjacent support connecting plates 13, the base 11, and the top plate 12 form a triangular structure to improve the structural stability of the support frame 10. The base 11, the top plate 12, and the plurality of support connecting plates 13 can be fixed together by welding.

[0034] In some embodiments, the base 11 is generally H-shaped and may include a first bottom plate 111, a second bottom plate 112, and a third bottom plate 113. The first bottom plate 111 and the second bottom plate 112 are arranged parallel and spaced apart. The ends of the third bottom plate 113 are perpendicularly connected to the first bottom plate 111 and the second bottom plate 112, respectively. The first bottom plate 111, the second bottom plate 112, and the third bottom plate 113 may be welded together or fixed by bolts. The first bottom plate 111, the second bottom plate 112, and the third bottom plate 113 may be made of channel steel. The length direction of the third bottom plate 113 is the same as the length direction of the top plate 12, and the length of the third bottom plate 113 is greater than the length of the top plate 12. The support frame 10 as a whole adopts a large bottom support structure, that is, a "large bottom and small top" structure. The large bottom structure can ensure the contact area between the support frame 10 and the ground, ensuring the stability of the support frame 10. The small top structure can reduce the volume and weight of the support frame 10 as much as possible while ensuring reliable support for the rotor. It can effectively solve the problem that the support frame 10 is easy to tip over when storing the rotor 100 and has low safety and reliability.

[0035] Two height adjustment assemblies 20 are disposed opposite each other, and each of the height adjustment assemblies 20 includes a first support body 21, a second support body 22, and two adjustment plates 23. The first support body 21 is provided with a plurality of first connection holes 211, which are spaced apart along the height direction. The second support body 22 is provided with a plurality of second connection holes 221, which are spaced apart along the height direction. Each adjustment plate 23 is provided with a plurality of fixing holes 231, which are spaced apart along the height direction.

[0036] Combine Figure 4As shown, the first support body 21 is connected to the top plate 12, and the second support body 22 is connected to the support plate 30. The second support body 22 is positioned above the first support body 21. Two adjustment plates 23 are mounted on opposite sides of the first support body 21 and the second support body 22. The fixing holes 231 are connected to the first connection holes 211 and the second connection holes 221 via fasteners, including but not limited to fastening bolts or fastening screws. The height adjustment assembly 20 can be adjusted by adjusting the relative positions of the adjustment plates 23, the first support body 21, and the second support body 22, thereby adjusting the height position of the support assembly 40 and adapting it to the support and flipping of rotors of different diameters. In addition, by replacing the adjustment plates 23 with different lengths, the overall height of the support assembly 40 can be adjusted, thereby adjusting the height of the nuclear power plant rotor support device to meet the support requirements of rotors of different diameters.

[0037] The two support assemblies 40 are disposed oppositely on the support plate 30 to support the nuclear power plant rotor, wherein Figure 5 and Figure 6 As shown, each support assembly 40 includes a first mounting seat 41, a second mounting seat 42, a roller 43, and a roller 44. The first mounting seat 41 and the second mounting seat 42 are arranged opposite to each other, and the line connecting the first mounting seat 41 and the second mounting seat 42 is perpendicular to the length direction of the supporting plate 30.

[0038] The roller 43 passes through the first mounting seat 41 and the second mounting seat 42 , and the roller 44 is installed at a portion of the roller 43 between the first mounting seat 41 and the second mounting seat 42 .

[0039] In some embodiments, each support assembly 40 includes an end cap 45. The roller 43 is generally T-shaped and may include a stopper 431 and a shaft 432 connected to the stopper 431. The stopper 431 and the shaft 432 are both generally cylindrical and may be coaxially arranged. The diameter of the stopper 431 is greater than the diameter of the shaft 432. The shaft 432 is provided through the first mounting seat 41 and the second mounting seat 42. The stopper 431 is located outside the first mounting seat 41. The portion of the shaft 432 protruding from the second mounting seat 42 is connected to the end cap 45, such as by a threaded connection.

[0040] Furthermore, the end cover 45 and the shaft portion 432 are respectively provided with a first limiting hole and a second limiting hole. The support assembly 40 may also include a pin passing through the first limiting hole and the second limiting hole, which can prevent the end cover 45 from falling off the shaft portion 432.

[0041] In some embodiments, the first mounting seat 41 defines a first mounting hole 411 , and the second mounting seat 42 defines a second mounting hole 421 . The shaft portion 432 passes through the first mounting hole 411 and the second mounting hole 421 .

[0042] In some embodiments, the first mounting seat 41 further comprises a first mounting slot 412, which communicates with the first mounting hole 411 and is provided with a first bearing 46. The second mounting seat 42 further comprises a second mounting slot 422, which communicates with the second mounting hole 421 and is provided with a second bearing 47. The shaft 432 extends through the first bearing 46 and the second bearing 47. The outer diameter of the shaft 432 is comparable to the inner diameter of the first bearing 46 and the second bearing 47, ensuring proper installation and preventing relative rotation. The aforementioned end cap 45 can be used to prevent foreign matter from entering the second mounting slot 422.

[0043] In some embodiments, the inner diameter of the first mounting groove 412 is 0.002-0.008 mm larger than the outer diameter of the first bearing 46 , and the inner diameter of the second mounting groove 422 is 0.002-0.008 mm larger than the outer diameter of the second bearing 47 .

[0044] In some embodiments, the roller 44 is a brass roller or a copper roller. The roller 44 is made of brass or copper, which can ensure support strength while preventing indentation damage to the rotor 100. Copper is soft and will not damage the steel shaft.

[0045] like Figure 3 As shown, a concave arc surface can be formed between the two rollers 44. Rotors 100 with different shaft diameters placed on the rollers 44 can all reliably contact the two rollers 44, so that the rotor 100 can be easily and reliably flipped and reliably supported. In addition, the concave arc surface structure can effectively prevent the rotor 100 from rolling and falling.

[0046] The application of this nuclear power plant rotor support device can effectively reduce industrial safety risks compared to the sleeper stacking solution. In addition, the support assembly 40 can reliably support rotors with different shaft diameters. The support assembly 40 uses two rollers 44 as support surfaces, and a concave arc surface is formed between the two rollers 44. Rotors with different shaft diameters placed on the two rollers 44 can reliably contact the two rollers 44, which can realize the rotor's flipping, and the concave arc surface structure can effectively prevent the rotor from rolling and falling.

[0047] The rotor support device of the nuclear power plant has a small overall structural size and is easy to use. The device is minimized while ensuring reliability and can be placed on site for use, which is simple and convenient.

[0048] The nuclear power plant rotor support device is suitable for rotors of different diameters. The support frame 10 and the height adjustment component 20 structure ensure connection reliability while realizing easy height adjustment of the height adjustment component 20, so that the nuclear power plant rotor support device as a whole can be suitable for rotors of different diameters.

[0049] It is understandable that the above embodiments merely represent preferred implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can freely combine the above technical features, make various variations, and improve upon them without departing from the concept of the present invention, and all of these fall within the scope of protection of the present invention. Therefore, any equivalent transformations and modifications made within the scope of the claims of the present invention shall fall within the scope of the claims of the present invention.

Claims

1. A nuclear power plant rotor support device, characterized in that: The invention comprises a support frame (10), two height adjustment components (20), a bearing plate (30) and two support components (40); the support frame (10) comprises a base (11), a top plate (12) and a plurality of support connecting plates (13); the top plate (12) and the base (11) are arranged opposite to each other with a distance therebetween, and the plurality of support connecting plates (13) connect the base (11) and the top plate (12); The two height adjustment assemblies (20) are arranged opposite to each other, and each of the height adjustment assemblies (20) comprises a first support body (21), a second support body (22), and two adjustment plates (23); the first support body (21) is provided with a plurality of first connection holes (211), and the plurality of first connection holes (211) are arranged at intervals along the height direction; the second support body (22) is provided with a plurality of second connection holes (221), and the plurality of second connection holes (221) are arranged at intervals along the height direction; each of the adjustment plates (23) is provided with a plurality of fixing holes (231), and the plurality of fixing holes (231) are arranged at intervals along the height direction; The first supporting bodies (21) are connected to the top plate (12), the second supporting bodies (22) are connected to the bearing plate (30), and the second supporting bodies (22) are arranged above the first supporting bodies (21); the two adjusting plates (23) are relatively mounted on opposite sides of the first supporting body (21) and the second supporting body (22), and the fixing holes (231) are correspondingly connected to the first connecting holes (211) and the second connecting holes (221) via fasteners; The two support assemblies (40) are arranged oppositely on the bearing plate (30) to support the nuclear power plant rotor, each support assembly (40) includes a first mounting seat (41), a second mounting seat (42), a roller (43), and a roller (44), the first mounting seat (41) and the second mounting seat (42) are arranged oppositely, and the connecting line of the first mounting seat (41) and the second mounting seat (42) is perpendicular to the length direction of the bearing plate (30); The roller (43) is provided through the first mounting seat (41) and the second mounting seat (42), and the roller (44) is installed on a portion of the roller (43) located between the first mounting seat (41) and the second mounting seat (42).

2. The nuclear power plant rotor support device according to claim 1, characterized in that: A plurality of the supporting connecting plates (13) are connected obliquely to the base (11) and the top plate (12), and two adjacent supporting connecting plates (13) form a triangular structure with the base (11) and the top plate (12).

3. The nuclear power plant rotor support device according to claim 1, characterized in that: The base (11) is H-shaped and comprises a first bottom plate (111), a second bottom plate (112) and a third bottom plate (113). The first bottom plate (111) and the second bottom plate (112) are arranged in parallel and spaced apart from each other, and two ends of the third bottom plate (113) are respectively vertically connected to the first bottom plate (111) and the second bottom plate (112).

4. The nuclear power plant rotor support device according to claim 3, characterized in that: The length direction of the third bottom plate (113) is the same as the length direction of the top plate (12), and the length of the third bottom plate (113) is greater than the length of the top plate (12).

5. The nuclear power plant rotor support device according to claim 1, characterized in that: The fasteners include fastening bolts or fastening screws.

6. The nuclear power plant rotor support device according to claim 5, characterized in that: Each of the support components (40) includes an end cover (45), and the roller (43) includes a limiting portion (431) and a shaft portion (432) connected to the limiting portion (431), the shaft portion (432) passing through the first mounting seat (41) and the second mounting seat (42), the limiting portion (431) being located outside the first mounting seat (41), and a portion of the shaft portion (432) protruding from the second mounting seat (42) being connected to the end cover (45).

7. The nuclear power plant rotor support device according to claim 6, characterized in that: The first mounting seat (41) is provided with a first mounting hole (411), and the second mounting seat (42) is provided with a second mounting hole (421); the shaft portion (432) passes through the first mounting hole (411) and the second mounting hole (421).

8. The nuclear power plant rotor support device according to claim 7, characterized in that: A first mounting groove (412) is further provided on the first mounting seat (41), the first mounting groove (412) is communicated with the first mounting hole (411), and the first mounting groove (412) is provided with a first bearing (46); A second mounting groove (422) is further provided on the second mounting seat (42), the second mounting groove (422) is communicated with the second mounting hole (421), and the second mounting groove (422) is provided with a second bearing (47); The shaft portion (432) is inserted into the first bearing (46) and the second bearing (47).

9. The nuclear power plant rotor support device according to claim 8, characterized in that: The inner diameter of the first mounting groove (412) is 0.002-0.008 mm larger than the outer diameter of the first bearing (46); and the inner diameter of the second mounting groove (422) is 0.002-0.008 mm larger than the outer diameter of the second bearing (47).

10. The nuclear power plant rotor support device according to claim 5, characterized in that: The roller (44) is a brass roller or a copper roller.

Images